Sorry, I didnt see that number mismatch when I answered. I will look into why there is no 6.5.22->7.6 upgrade package. More than likely they are waiting for 7.6.1.0 to be released to make it. If I cany find an answer soon I can send you the SugarPro-Upgrade-6.5.x-to-6.5.21.zip package to make everything line up.

This reply was created from a merged topic originally titled SugarCRM upgrade issue, not compatible ?. Hi, we are just upgrade 6.5.18 to 6.5.22, which works fine. Buy when i use SugarPro-Upgrade-6.5.22-to-7.6.1.0.zip then error comes. Please help, How we can upgrade then?

There are major changes between 6.5 and 7.6 which could affect your customizations. Make sure you are doing the upgrade in a test instance before upgrading production. Some of the changes between 6.5 and 7.6 can be found in What to Expect When Upgrading to 7.6 but the Health Check will also help identify errors that will affect the upgrade.

Which OS / webserver / PHP version are you running, maybe we can give you some directions on how to get that module. If you are on a hosted environment without access to PHP configuration please request the module from your hoster.

at least a user with admin access should be able to log in and verify the license key against Sugar's key server. Please make sure your server has web access, in any other case, you will have to validate manually.